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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
20/06/2023 |
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Autoria: |
FORD, H. M.; NANCARROW, C. D.; FINDLAY, J. K. |
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Título: |
Effect of anaesthesia on ovarian follicular development and ovulation in the sheep subsequent to prostaglandin-induced luteolysis. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Journal Endocrinology, v. 78, n. 3, p. 321-327, 1978. |
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Idioma: |
Inglês |
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Conteúdo: |
Prostaglandi analogues were used to induce luteal regression simutaneously in a number of ewes, thereby synchronizing the final stages of follicular maturation in these animals. Some of the ewes were anaesthetized for 24 h immediately after the injection of prostaglandin (experiment 1), and others for 15 h, starting 24 h after the injection of prostaglandin (experiment 2). In both experiments administration of anaesthetic significantly delayed the onset of oestrus and the time of ovulation relative to prostaglandin-treated control animals. The results from assays of blood samples collected at regular intervals in experiment 1 indicated that the preovulatory peak in the concentration of LH and the periovulatory changes in the concentration of FSH were similarlydelayed and that during anaesthesia the level of LH was significantly reduced. It is suggested that the reduced level of LH, which probably resulted from a reduction in the secretion of releasing factor due to anaesthesia, failed to support oestrogen production by the Graafian follicle(s), thereby delaying the occurrence of oestrus and ovulation. |
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Palavras-Chave: |
Drug effects. |
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Thesagro: |
Endocrinologia; Fisiologia; Ovino; Reprodução. |
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Thesaurus Nal: |
Cloprostenol; Endocrinology; Estrus; Estrus synchronization; Ovarian follicles; Ovulation; Pentobarbital; Pharmacology; Pregnancy; Prostaglandin-F synthase; Reproduction; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02106naa a2200349 a 4500
001 1520041
005 2023-06-20
008 1978 bl uuuu u00u1 u #d
100 1 $aFORD, H. M.
245 $aEffect of anaesthesia on ovarian follicular development and ovulation in the sheep subsequent to prostaglandin-induced luteolysis.$h[electronic resource]
260 $c1978
520 $aProstaglandi analogues were used to induce luteal regression simutaneously in a number of ewes, thereby synchronizing the final stages of follicular maturation in these animals. Some of the ewes were anaesthetized for 24 h immediately after the injection of prostaglandin (experiment 1), and others for 15 h, starting 24 h after the injection of prostaglandin (experiment 2). In both experiments administration of anaesthetic significantly delayed the onset of oestrus and the time of ovulation relative to prostaglandin-treated control animals. The results from assays of blood samples collected at regular intervals in experiment 1 indicated that the preovulatory peak in the concentration of LH and the periovulatory changes in the concentration of FSH were similarlydelayed and that during anaesthesia the level of LH was significantly reduced. It is suggested that the reduced level of LH, which probably resulted from a reduction in the secretion of releasing factor due to anaesthesia, failed to support oestrogen production by the Graafian follicle(s), thereby delaying the occurrence of oestrus and ovulation.
650 $aCloprostenol
650 $aEndocrinology
650 $aEstrus
650 $aEstrus synchronization
650 $aOvarian follicles
650 $aOvulation
650 $aPentobarbital
650 $aPharmacology
650 $aPregnancy
650 $aProstaglandin-F synthase
650 $aReproduction
650 $aSheep
650 $aEndocrinologia
650 $aFisiologia
650 $aOvino
650 $aReprodução
653 $aDrug effects
700 1 $aNANCARROW, C. D.
700 1 $aFINDLAY, J. K.
773 $tJournal Endocrinology$gv. 78, n. 3, p. 321-327, 1978.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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